春季自动装配与独特的豆：春季预计单一匹配豆,但发现2

No unique bean of type [com.hp.it.km.search.web.suggestion.SuggestionService] is defined: expected single matching bean but found 2: [suggestionService,SuggestionService]

我无法看到我在哪里定义这个bean两次，但是对于Spring和自动布线来说是新的，所以我可能会缺少一些基本的东西。下面列出的xml和2类的源代码…

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"     xmlns:context="http://www.springframework.org/schema/context"     xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
    http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

<context:component-scan base-package="com.hp.it.km.search.web.suggestion" />
<mvc:annotation-driven />
<context:annotation-config />

<bean id="SuggestionController" class="com.hp.it.km.search.web.suggestion.SuggestionController">
    <property name="service">
        <ref bean="SuggestionService" />
    </property>
</bean>

<bean id="SuggestionService" class="com.hp.it.km.search.web.suggestion.SuggestionService">
    <property name="indexSearchers"> 
         <map>
            <entry key="KMSearcher"> <ref bean="KMSearcherBean"></ref></entry>
        </map>
    </property>
</bean>

<bean id="KMSearcherBean" class="com.hp.it.km.search.web.suggestion.SuggestionIndexSearcher">
      <constructor-arg index="0" value="KMSearcher" />
      <constructor-arg index="1" value="C://dev//workspace//search-restful-webapp//src//main//resources//indexes//keyword" />
</bean>

与自动连线控制器和服务bean的类屁股在这里…

@Controller
public class SuggestionController {
private SuggestionService service;

@Autowired
public void setService(SuggestionService service) {
    this.service = service;
}

public SuggestionService getService() {
    return service;
}

和…

@Component
public class SuggestionService {

private Map<String,IndexSearcher> indexSearchers = new HashMap<String,IndexSearcher>();

@Autowired
public void setIndexSearchers(Map<String,IndexSearcher> indexSearchers) {
    this.indexSearchers = indexSearchers;
}

    public SuggestionService() {
    super(); }

请帮忙！